28432333011 has 4 divisors (see below), whose sum is σ = 37909777352. Its totient is φ = 18954888672.

The previous prime is 28432333003. The next prime is 28432333019. The reversal of 28432333011 is 11033323482.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28432333003) and next prime (28432333019).

It is not a de Polignac number, because 28432333011 - 2³ = 28432333003 is a prime.

It is a super-2 number, since 2×28432333011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28432333011.

It is not an unprimeable number, because it can be changed into a prime (28432333019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4738722166 + ... + 4738722171.

It is an arithmetic number, because the mean of its divisors is an integer number (9477444338).

Almost surely, 2^28432333011 is an apocalyptic number.

28432333011 is a deficient number, since it is larger than the sum of its proper divisors (9477444341).

28432333011 is an equidigital number, since it uses as much as digits as its factorization.

28432333011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9477444340.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 28432333011 its reverse (11033323482), we get a palindrome (39465656493).

The spelling of 28432333011 in words is "twenty-eight billion, four hundred thirty-two million, three hundred thirty-three thousand, eleven".